求解，更新内核弄出一堆错来

正常能用，但fallback内核挂掉了，以下是详细信息

==> Building image "default"
==> Running command: /sbin/mkinitcpio -k 2.6.33-ARCH -c /etc/mkinitcpio.conf -g /boot/kernel26.img
:: Begin build
:: Parsing hook [base]
:: Parsing hook [udev]
:: Parsing hook [autodetect]
:: Parsing hook [pata]
:: Parsing hook [scsi]
:: Parsing hook [sata]
:: Parsing hook [filesystems]
:: Generating module dependencies
:: Generating image '/boot/kernel26.img'...SUCCESS
==> SUCCESS
==> Building image "fallback"
==> Running command: /sbin/mkinitcpio -k 2.6.33-ARCH -c /etc/mkinitcpio.conf -g /boot/kernel26-fallback.img -S autodetect
:: Begin build
:: Parsing hook [base]
:: Parsing hook [udev]
:: Parsing hook [pata]
:: Parsing hook [scsi]
ERROR: modinfo: could not open /lib/modules/2.6.33-ARCH/kernel/lib/lru_cache.ko/ipv6.ko: Exec format error
ERROR: modinfo: could not open /lib/modules/2.6.33-ARCH/kernel/lib/lru_cache.ko/ipv6.ko: Exec format error
ERROR: module 'lru[-_]cache' not found
:: Parsing hook [sata]
:: Parsing hook [filesystems]
ERROR: module 'libcrc32c' not found
ERROR: module 'zlib[-_]deflate' not found
ERROR: module 'crc16' not found
ERROR: module 'zlib[-_]deflate' not found
ERROR: module 'crc[-_]itu[-_]t' not found
ERROR: module 'crc[-_]itu[-_]t' not found
:: Generating module dependencies
WARNING: Can't read module /tmp/mkinitcpio.C5extM/lib/modules/2.6.33-ARCH/kernel/lib/lru_cache.ko: No such device
:: Generating image '/boot/kernel26-fallback.img'...SUCCESS
==> SUCCESS

是不是你自己编译了内核但是没有更新好，有部分模块不见了

最后显示 "success" 了
fallback 好像是把所有模块“编译”进去，如果编译内核时改变了默认选项，很可能会出错，
一般不影响使用